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Novosadov [1.4K]
3 years ago
10

Write the symbol of each neutral element based on its written electron configuration:

Chemistry
1 answer:
yan [13]3 years ago
4 0

Answer:

First one is VANADIUM (V).

Last one is CAESIUM (Cs).

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write down the balanced chemical equation of the reaction that takes place between iron and concentrated sulphuric acid​
pishuonlain [190]

Answer:

2Fe + 3H2SO4 → Fe2(SO4)3 + 3H2

Explanation:

Iron is a metallic element with chemical symbol, Fe while concentrated sulphuric acid is a chemical compound with chemical formula, H2SO4. Both are involved in a chemical reaction as follows:

Fe + H2SO4 → Fe2(SO4)3 + H2

However, this reaction is not balanced as the number of moles of each atom in both the reactants and product side is not equal. To balance the equation, we have to ensure that each number of atom is equal. The balanced equation are as follows:

2Fe + 3H2SO4 → Fe2(SO4)3 + 3H2

5 0
3 years ago
A compound with the empirical formula CH2 has a molar mass of 126g/mol. What is the molecular formula for this compound?
stellarik [79]

Answer: C10H20

Explanation:

C=12

H=1

(12+1)n=126

13n=126

n=126/13

n=10

Molecular formula

C10H20

3 0
3 years ago
Read 2 more answers
How many moles of AgNO3 must react to form 0. 854 mol Ag? mol AgNO3.
babunello [35]

The moles of silver nitrate required to form 0.854 mol silver ion has been 0.854 mol.

The balanced chemical equation for the dissolution of silver nitrate has been:

\rm AgNO_3\;\rightarrow\;Ag^+\;+\;NO_3^-

The aqueous solution of silver nitrate has been dissociated into the constituent silver and nitrate ions.

In a balanced chemical equation, the coefficient has been equivalent to the moles of each reactant forming the moles of product.

From, the balanced equation,

\rm 1\;mol\;AgNO_3=1\;mol\;Ag

The given moles of Silver has been 0.854 mol. Thus, the moles of silver nitrate required has been given as:

\rm 1\;mol\;Ag^+=1\;mol\;AgNO_3\\0.854\;mol\;Ag^+=0.854\;\times\;1\;mol\;AgNO_3\\0.854\;mol\;Ag^+=0.854\;mol\;AgNO_3

The moles of silver nitrate required to form 0.854 mol silver ion has been 0.854 mol.

For more information about the moles produced, refer to the link:

brainly.com/question/10606802

6 0
2 years ago
This model shows a single unit of a compound containing several elements what is the chemical formula for the substance
Vinil7 [7]

Explanation:

First Question

- The correct chemical formular is ;  Al2(SO4)3

Second question

The following applies;

- The mass of the products is the same as the mass of the reactants

- At least one new product formed is a gas

- Molecules are changing into different molecules

Third Question

- Zn + HCl → ZnCl2 + H2

Fourth Question

- The atoms in the original substances regroup and form a different substance

- Matter is conserved

- The same atoms are present before and after the reaction

5 0
3 years ago
Elements riddle: Without my next door neighbor, I wouldn’t be worth 6 cents. Who am I?
zalisa [80]
If I understand this right, the two elements are Nickel and Copper, elements 28 and 28, respectively. A nickel is worth 5 cents, and a penny, originally comprised of copper, is worth one - the total being six cents.
7 0
3 years ago
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